Answer: B
Explanation: Aphthous ulcers are white, round, or oval lesions surrounded by a red halo that appear on the buccal mucosa.
Answer:
Low-carb diets that emphasize healthy sources of carbs, fat and protein may help lower the risk of type 2 diabetes and heart disease. In fact, almost any diet that helps you shed excess weight may improve blood sugar and cholesterol levels, at least temporarily.
C. staying away from smoke and people who smoke will make you less tempted to smoke.